BackForwardInstrument:  IR spectrometer 

Instrument details
Acronym IR spectrometer
Full name Infra Red Spectrometer
Purpose Benchmark data for climate monitoring: extended spectrum towards Space
Short description Range 5-50 μm, spectral resolution 0.5 cm-1. radiometric accuracy 0.1 K at 300 K nadir-pointing, IFOV 100 km.
Background New development
Scanning Technique Nadir only
Resolution 100 km
Coverage / Cycle Global coverage in 1 month for 100 km average spacing
Mass Power Data Rate

 

Providing Agency NASA
Instrument Maturity Backed by strong heritage
Utilization Period: TBD
Last update: 2022-11-28
Detailed characteristics
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Earth observation instrument
  • Passive optical radiometer or spectrometer
  • Cross-nadir infrared sounder, possibly including VIS channels
WIGOS Subcomponents
  • Subcomponent 1
  • Absolutely calibrated broadband radiometers, and TSI and SSI radiometers
  • Broadband radiometer (for ERB)
  • On-orbit measurement reference standards for VIS/NIR, IR, MW absolute calibration.
  • On-orbit measurement reference standards for VIS/NIR, IR, MW absolute calibration.
Mission objectives
Primary mission objectives
  • Atmospheric temperature
  • Height of the top of PBL
  • Height of the tropopause
  • Integrated Water Vapour (IWV)
  • Sea surface temperature
  • Specific humidity
  • Temperature of the tropopause
  • Upward long-wave irradiance at TOA
  • Upward spectral radiance at TOA
Evaluation of Measurements